When Should You Give Your Child Fever Medicine?

Give your child fever medicine when the fever is making them uncomfortable, not because the thermometer shows a high number. Fever is usually the body’s normal response to an infection. Paracetamol (acetaminophen) or ibuprofen can ease the aches and fussiness, but always follow the label or your doctor’s advice on the right amount for your child (Sullivan et al., 2011).

Older medical books call these medicines febrifuges, an old word for a fever reducer. Doctors today say antipyretics, and on pharmacy shelves in Indonesia you’ll mostly see them sold as paracetamol or ibuprofen syrups and drops. They all bring the temperature down for a few hours while the immune system deals with whatever caused the fever.

What counts as a fever in a child?

For children, a temperature of 38°C (100.4°F) or higher is generally considered a fever, and most fevers settle on their own within 1 to 4 days (NHS, 2024). A fever in a toddler is usually a sign that the body is fighting an illness or infection, even when no other symptoms have shown up yet (American Academy of Pediatrics, 2022). When a fever drags on, a doctor’s check helps find the cause.

How you measure it makes a difference. Forehead, ear and armpit readings are quick and easy with a squirming toddler, but they can read a little differently from a digital thermometer used in the mouth or, for babies, in the bottom. If a reading seems borderline, take it again a few minutes later with the same thermometer before deciding what to do.

The number on the screen tells you less than your child’s behavior does. A toddler at 39°C who is still stacking blocks and asking for a snack is often doing better than one at 38.3°C who is limp and refusing to drink. The American Academy of Pediatrics notes that a child who plays and interacts once the discomfort has eased is a good sign (American Academy of Pediatrics, 2022).

When fever medicine helps and when you can wait

The American Academy of Pediatrics says the main goal of treating a feverish child is to make them more comfortable, and parents shouldn’t focus on getting the temperature back to normal. Its clinical report found no evidence that fever itself makes an illness worse or causes long-term problems with the nervous system (Sullivan et al., 2011). For an anxious parent checking a hot forehead at 2am, it helps to know that a fever usually shows the immune system is doing its job.

In practice, this means a mildly feverish child who is sleeping peacefully usually doesn’t need to be woken for a dose. If your child is distressed, achy, unable to settle or too uncomfortable to drink, that is when a fever medicine is useful (NHS, 2024).

Keep in mind that the medicine eases the discomfort while the infection behind it runs its course. A temperature that drops after a dose can climb again a few hours later when the medicine wears off, and that on its own doesn’t mean your child is getting worse. What matters more is whether they perk up in between doses, keep drinking and still respond to you normally.

Paracetamol or ibuprofen for children

Both medicines are widely used for children, and the right amount depends on your child’s weight and on the strength of the specific syrup or drops you have. The American Academy of Pediatrics advises using your child’s weight to work out the dose and checking with your child’s doctor that you are giving the right amount (American Academy of Pediatrics, 2024). That is why no doses are listed here, since a figure that suits one product can be wrong for another.

Age limits matter. NHS guidance says not to give paracetamol to a baby under 2 months (NHS, 2024). The American Academy of Pediatrics advises against ibuprofen for babies under 6 months unless your child’s doctor tells you to use it (American Academy of Pediatrics, 2024). The NHS also advises against ibuprofen for a child who is dehydrated or has chickenpox, and for children with asthma unless a doctor has recommended it (NHS, 2024).

Aspirin should not be given to anyone under 16 (NHS, 2024). The NHS also advises against alternating paracetamol and ibuprofen unless a health professional tells you to (NHS, 2024). The AAP report notes that combining the two can make treatment more complicated and may lead to mistakes with dosing, so if one medicine isn’t helping, call your doctor rather than adding the second on your own (Sullivan et al., 2011).

Keeping a feverish child comfortable at home

Fluids come first. Offer water, soup or diluted fruit juice in small, frequent sips, and if your child is still breastfeeding, keep going, since breast milk is both comforting and hydrating (NHS, 2024). Offer food if they want it, but don’t worry if their appetite drops for a day or two.

Many families reach for a cold compress or a cool bath, but NHS guidance advises against undressing a feverish child or sponging them down to cool them (NHS, 2024). It also advises against bundling them in too many clothes or blankets. Light, comfortable clothing in a room that isn’t too hot or too cold is enough.

Keep your child home from daycare or school while they have a fever, and check on them regularly, including during the night (NHS, 2024). A quick look at whether they are drinking, whether their diaper is wet and how easily they wake tells you a lot. This kind of close watching is what Morinaga calls ATENSI, and it is often how parents spot early that something needs a doctor.

Signs your child needs a doctor or emergency care

Age is the first thing to consider. Call your doctor right away if a baby under 3 months has a temperature of 38°C (100.4°F) or higher (American Academy of Pediatrics, 2022). The NHS also advises getting medical advice for a baby aged 3 to 6 months with a temperature of 39°C or higher (NHS, 2024).

At any age, go to the emergency department if your child has a seizure, a rash that does not fade when you press a glass against it, a stiff neck, discomfort looking at light or trouble breathing (NHS, 2024). The same applies if they are very drowsy and hard to wake, unusually agitated or confused, or their skin, lips or tongue look blue, gray or pale. The AAP adds that a temperature that repeatedly rises above 40°C (104°F), or a child who looks very ill, needs a doctor promptly (American Academy of Pediatrics, 2022).

Duration matters too. The AAP advises calling the doctor if a fever lasts more than 24 hours in a child under 2, or more than 3 days in a child aged 2 or older (American Academy of Pediatrics, 2022). See a doctor sooner if your child shows signs of dehydration, isn’t eating or doesn’t seem like themselves, even when the fever itself isn’t very high (NHS, 2024).

Fever medicine and dengue in Indonesia

Dengue is found in tropical and subtropical countries, Indonesia among them, so it deserves a place in any decision about fever medicine here (World Health Organization, 2025). The World Health Organization says there is no specific treatment for dengue, and that pain and fever can be managed with paracetamol. It advises avoiding non-steroidal anti-inflammatory medicines such as ibuprofen and aspirin, because they can increase the risk of bleeding (World Health Organization, 2025).

If your child has a high fever and there have been dengue cases in your neighborhood or at their school, talk to a doctor before giving ibuprofen. The doctor may suggest a blood test to check for dengue, especially if the fever is high and comes with a severe headache, pain behind the eyes, muscle and joint pain or a rash (World Health Organization, 2025).

Watch closely as the fever starts to come down. The WHO notes that warning signs of severe dengue often appear after the fever has gone, and include severe abdominal pain, persistent vomiting, rapid breathing, bleeding gums or nose, blood in vomit or stool, restlessness and weakness (World Health Organization, 2025). Any of these means your child needs medical care immediately, even if their temperature has returned to normal.